Haemorrhagic ulceration of gut.
D006471:Gastrointestinal Hemorrhage / Q000150:complications*; D006801:Humans; D007410:Intestinal Diseases / Q000150:complications*; D007422:Intestines / Q000098:blood supply; D007511:Ischemia / Q000209:etiology; D009336:Necrosis / Q000150:complications; D010438:Peptic Ulcer Hemorrhage / Q000150:complications* / Q000209:etiology; D012769:Shock / Q000150:complications; D013927:Thrombosis / Q000150:complications; D014456:Ulcer / Q000209:etiology